Superficial Rockwell Hardness Tester Phase II - Model 900-420

Key Features

• Digital Superficial Rockwell hardness tester
• Closed-loop electronic load cell system
• Motorized force application
• Automatic loading and unloading
• High-definition LCD touch screen
• Microcomputer-controlled operation
• USB output
• Automatic hardness scale conversion
• Programmable dwell time
• Statistical functions
• Test counter
• Upper and lower tolerance settings
• High-speed testing cycle
• Manufactured utilizing the guidelines of ASTM E18

Overview

The Phase II Model 900-420 Digital Superficial Rockwell Hardness Tester is a precision bench-top hardness testing system designed specifically for Superficial Rockwell hardness testing using a closed-loop electronic load cell. The tester is intended for evaluating thin materials, surface-hardened components, plated parts, finished products, and other applications requiring lower test forces than conventional Rockwell testing.

The Model 900-420 features fully automatic load application, a high-definition touch screen, programmable dwell time, USB output, automatic hardness conversions, statistical analysis, and motorized force control. Phase II states the tester is manufactured utilizing the guidelines of ASTM E18.

Applications

The Model 900-420 is ideal for testing:

• Thin sheet metal
• Surface-hardened components
• Carburized parts
• Nitrided components
• Plated materials
• Precision machined parts
• Stainless steel
• Aluminum alloys
• Copper alloys
• Brass
• Finished production parts
• Delicate components requiring lower test forces

The appropriate superficial Rockwell scale should be selected based on the material, thickness, and applicable testing standard.

Industries Served

• Aerospace
• Automotive
• Medical Device Manufacturing
• Electronics Manufacturing
• Heat Treating
• Precision Machining
• Tool & Die
• Metal Fabrication
• Quality Assurance Laboratories
• Research Laboratories

Included Accessories

• N-scale diamond indenter
• 1/16 in. ball indenter
• Two HRN hardness test blocks
• One HRT hardness test block
• 5.87 in. (150 mm) test table
• 2.5 in. (63 mm) flat anvil
• Standard V-anvil
• Accessory case
• Dust cover

Optional Accessories

Available accessories include:

• Certified Superficial Rockwell hardness test blocks
• Replacement diamond indenters
• Replacement ball indenters
• Additional anvils
• Calibration accessories
• Hardness testing accessory kits

Calibration & Verification

Routine verification should be performed using certified Superficial Rockwell hardness test blocks appropriate for the hardness scales being evaluated. Regular inspection of the electronic load cell, indenters, anvils, and overall machine performance helps maintain reliable testing accuracy.

WESTport provides:

• Certified Superficial Rockwell hardness test blocks
• Replacement diamond and ball indenters
• Calibration and verification services
• Hardness tester repair
• Technical application assistance

Why Buy from WESTport?

WESTport offers complete hardness testing solutions, including:

• Certified Superficial Rockwell hardness test blocks
• Replacement indenters and anvils
• Calibration and repair services
• Technical application assistance
• Responsive customer support
• Long-term product support

Frequently Asked Questions

What materials is the Model 900-420 designed to test?

The Model 900-420 is designed for materials and components that require lower testing forces, including thin materials, surface-treated parts, and finished components.

What test forces are available?

The tester uses a 3 kgf minor load with selectable 15, 30, and 45 kgf major loads.

How does the tester apply the testing force?

The Model 900-420 utilizes a motorized closed-loop electronic load cell system for automatic force application and control.

Does the tester include USB connectivity?

Yes. USB output is included for exporting hardness test data.

Can hardness values be converted automatically?

Yes. The tester includes automatic hardness conversion functions.

Can WESTport provide calibration and certified test blocks?

Yes. WESTport supplies certified Superficial Rockwell hardness test blocks, replacement indenters, calibration services, repair services, and technical support.

Explore our complete line of hardness testers and certified hardness test blocks, or call 1-888-400-4243 to speak with a hardness testing specialist.